High-density scaling identity for the half-space log-Gamma polymer when β~<t~\tilde{\beta}<\tilde{t}

From papers

Let β~\tilde{\beta}, t~\tilde{t}, α\alpha, and AA be the parameters from the cited high-density asymptotic theorem, and let Q~β~<t~High\widetilde{Q}_{\tilde{\beta}<\tilde{t}}^{High} be the corresponding limiting function. Let F~β~,t~HD\widetilde{F}_{-\tilde{\beta},-\tilde{t}}^{HD} denote the stationary exponential-LPP limiting function. High-density matching conjecture. The following identity of functions is expected:

(1+1β~t~s)12πRR(Aiy)eAxeixyQ~β~<t~High(x+v),dx,dy=F~β~,t~HD(v).\left(1+\frac{1}{\tilde{\beta}-\tilde{t}}\partial_s\right)\frac{1}{2\pi}\int_{\mathbb{R}}\int_{\mathbb{R}}(A-\mathrm{i}y)e^{-Ax}e^{\mathrm{i}xy}\widetilde{Q}_{\tilde{\beta}<\tilde{t}}^{High}(x+v)\\,dx\\,dy=\widetilde{F}_{-\tilde{\beta},-\tilde{t}}^{HD}(v).

The conjecture expresses agreement between the log-Gamma and stationary exponential-LPP asymptotic formulas in the high-density regime. The source does not state that this identity has been proved.

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Sources & referencesView supporting material

Primary source

Jiyue Zeng and Xinyi Zhang, “Stationary Log-Gamma Polymer in Half-Space”, arXiv:2602.19500 (2026).

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